EP 3119020 A4 20170503 - POLAR CODE HYBRID AUTOMATIC REPEAT REQUEST METHOD AND DEVICE, AND RADIO COMMUNICATION DEVICE
Title (en)
POLAR CODE HYBRID AUTOMATIC REPEAT REQUEST METHOD AND DEVICE, AND RADIO COMMUNICATION DEVICE
Title (de)
POLARCODE-HARQ-VERFAHREN UND VORRICHTUNG SOWIE FUNKKOMMUNIKATIONSVORRICHTUNG
Title (fr)
PROCÉDÉ ET DISPOSITIF DE DEMANDE DE RÉPÉTITION AUTOMATIQUE HYBRIDE DE CODE POLAIRE, ET DISPOSITIF DE RADIOCOMMUNICATION
Publication
Application
Priority
CN 2014074398 W 20140331
Abstract (en)
[origin: EP3119020A1] Embodiments of the present invention disclose a polar code hybrid automatic repeat request method and apparatus, and a wireless communications apparatus, to resolve a problem of a performance loss in a first transmission. The method includes: selecting, from M polar codes of a same code length and code rate, a polar code corresponding to an actual code rate for a first transmission, and encoding an information bit sequence by using the polar code to obtain encoded bits; and performing rate matching on the encoded bits to generate to-be-sent bits. Different from a traditional HARQ using one polar code, in this embodiment, a polar code corresponding to the actual code rate for the first transmission is selected from the M polar codes during the initial transmission, so that a different polar code can be selected adaptively according to the actual code rate for the first transmission. The selected polar code corresponds to the actual code rate for the first transmission, thereby avoiding a performance loss in the first transmission due to an excessively large difference between the actual code rate for the first transmission and a target code rate corresponding to the polar code.
IPC 8 full level
H03M 13/13 (2006.01); H04L 1/00 (2006.01); H04L 1/18 (2006.01)
CPC (source: EP RU US)
H03M 13/13 (2013.01 - EP US); H03M 13/6306 (2013.01 - EP RU US); H03M 13/6362 (2013.01 - EP RU US); H04L 1/0061 (2013.01 - RU US); H04L 1/0067 (2013.01 - EP RU US); H04L 1/1819 (2013.01 - EP RU US)
Citation (search report)
- [XI] CHEN KAI ET AL: "A Hybrid ARQ Scheme Based on Polar Codes", IEEE COMMUNICATIONS LETTERS, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 17, no. 10, 1 October 2013 (2013-10-01), pages 1996 - 1999, XP011535616, ISSN: 1089-7798, [retrieved on 20131028], DOI: 10.1109/LCOMM.2013.090213.131670
- [A] ERDAL ARIKAN: "Channel polarization: A method for constructing capacity-achieving codes for symmetric binary-input memoryless channels", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 24 July 2008 (2008-07-24), XP080428257, DOI: 10.1109/TIT.2009.2021379
- See references of WO 2015149225A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3119020 A1 20170118; EP 3119020 A4 20170503; EP 3119020 B1 20200101; CA 2972922 A1 20151008; CA 2972922 C 20191105; CN 105900365 A 20160824; CN 105900365 B 20190920; RU 2669743 C1 20181015; US 2017019214 A1 20170119; US 9973302 B2 20180515; WO 2015149225 A1 20151008
DOCDB simple family (application)
EP 14888008 A 20140331; CA 2972922 A 20140331; CN 2014074398 W 20140331; CN 201480071656 A 20140331; RU 2017126362 A 20140331; US 201615280546 A 20160929